content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2012, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jfreechart/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
   * Other names may be trademarks of their respective owners.]
   *
   * ------------------
   * DialPlotTests.java
   * ------------------
   * (C) Copyright 2006-2008, by Object Refinery Limited and Contributors.
   *
   * Original Author:  David Gilbert (for Object Refinery Limited);
   * Contributor(s):   -;
   *
   * Changes
   * -------
   * 03-Nov-2006 : Version 1 (DG);
   *
   */
  
  package org.jfree.chart.plot.dial;
  
  import org.jfree.chart.event.PlotChangeEvent;
  import org.jfree.chart.event.PlotChangeListener;
  import org.junit.Test;
  
  import java.awt.Color;
  import java.awt.GradientPaint;
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.io.ObjectInput;
  import java.io.ObjectInputStream;
  import java.io.ObjectOutput;
  import java.io.ObjectOutputStream;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertNotNull;
  import static org.junit.Assert.assertNotSame;
  import static org.junit.Assert.assertNull;
  import static org.junit.Assert.assertSame;
  
  /**
   * Tests for the {@link DialPlot} class.
   */
  public class DialPlotTest  implements PlotChangeListener {
  
      /** The last plot change event received. */
      private PlotChangeEvent lastEvent;
  
      /**
       * Records the last plot change event received.
       *
       * @param event  the event.
       */
      @Override
      public void plotChanged(PlotChangeEvent event) {
          this.lastEvent = event;
      }
  
  
  
  
  
  
      /**
       * Confirm that the equals method can distinguish all the required fields.
       */
      @Test
      public void testEquals() {
          DialPlot p1 = new DialPlot();
          DialPlot p2 = new DialPlot();
          assertEquals(p1, p2);
  
          // background
          p1.setBackground(new DialBackground(Color.green));
          assertFalse(p1.equals(p2));
          p2.setBackground(new DialBackground(Color.green));
          assertEquals(p1, p2);
  
          p1.setBackground(null);
          assertFalse(p1.equals(p2));
          p2.setBackground(null);
          assertEquals(p1, p2);
  
          // dial cap
          DialCap cap1 = new DialCap();
          cap1.setFillPaint(Color.RED);
          p1.setCap(cap1);
          assertFalse(p1.equals(p2));
          DialCap cap2 = new DialCap();
          cap2.setFillPaint(Color.RED);
          p2.setCap(cap2);
          assertEquals(p1, p2);
  
          p1.setCap(null);
          assertFalse(p1.equals(p2));
          p2.setCap(null);
          assertEquals(p1, p2);
  
          // frame
          StandardDialFrame f1 = new StandardDialFrame();
          f1.setBackgroundPaint(new GradientPaint(1.0f, 2.0f, Color.RED, 3.0f,
                  4.0f, Color.WHITE));
          p1.setDialFrame(f1);
          assertFalse(p1.equals(p2));
          StandardDialFrame f2 = new StandardDialFrame();
          f2.setBackgroundPaint(new GradientPaint(1.0f, 2.0f, Color.RED, 3.0f,
                  4.0f, Color.WHITE));
          p2.setDialFrame(f2);
          assertEquals(p1, p2);
  
          // view
          p1.setView(0.2, 0.0, 0.8, 1.0);
          assertFalse(p1.equals(p2));
          p2.setView(0.2, 0.0, 0.8, 1.0);
          assertEquals(p1, p2);
  
          // layer
          p1.addLayer(new StandardDialScale());
          assertFalse(p1.equals(p2));
          p2.addLayer(new StandardDialScale());
          assertEquals(p1, p2);
      }
  
      /**
       * Two objects that are equal are required to return the same hashCode.
       */
      @Test
      public void testHashCode() {
          DialPlot p1 = new DialPlot();
          DialPlot p2 = new DialPlot();
          assertEquals(p1, p2);
          int h1 = p1.hashCode();
          int h2 = p2.hashCode();
          assertEquals(h1, h2);
      }
  
      /**
       * Confirm that cloning works.
       */
      @Test
      public void testCloning() throws CloneNotSupportedException {
          DialPlot p1 = new DialPlot();
          DialPlot p2 = (DialPlot) p1.clone();
          assertNotSame(p1, p2);
          assertSame(p1.getClass(), p2.getClass());
          assertEquals(p1, p2);
      }
  
  
      /**
       * Serialize an instance, restore it, and check for equality.
       */
      @Test
      public void testSerialization() throws IOException, ClassNotFoundException {
          DialPlot p1 = new DialPlot();
  
              ByteArrayOutputStream buffer = new ByteArrayOutputStream();
              ObjectOutput out = new ObjectOutputStream(buffer);
              out.writeObject(p1);
              out.close();
  
              ObjectInput in = new ObjectInputStream(
                      new ByteArrayInputStream(buffer.toByteArray()));
          DialPlot p2 = (DialPlot) in.readObject();
              in.close();
  
          assertEquals(p1, p2);
      }
  
      /**
       * Check the notification event mechanism for the dial background.
       */
      @Test
      public void testBackgroundListener() {
          DialPlot p = new DialPlot();
          DialBackground b1 = new DialBackground(Color.RED);
          p.setBackground(b1);
          p.addChangeListener(this);
          this.lastEvent = null;
          b1.setPaint(Color.BLUE);
          assertNotNull(this.lastEvent);
  
          DialBackground b2 = new DialBackground(Color.green);
          p.setBackground(b2);
          this.lastEvent = null;
          b1.setPaint(Color.RED);
          assertNull(this.lastEvent);
          b2.setPaint(Color.RED);
          assertNotNull(this.lastEvent);
      }
  
      /**
       * Check the notification event mechanism for the dial cap.
       */
      @Test
      public void testCapListener() {
          DialPlot p = new DialPlot();
          DialCap c1 = new DialCap();
          p.setCap(c1);
          p.addChangeListener(this);
          this.lastEvent = null;
          c1.setFillPaint(Color.RED);
          assertNotNull(this.lastEvent);
  
          DialCap c2 = new DialCap();
          p.setCap(c2);
          this.lastEvent = null;
          c1.setFillPaint(Color.BLUE);
          assertNull(this.lastEvent);
          c2.setFillPaint(Color.green);
          assertNotNull(this.lastEvent);
      }
  
      /**
       * Check the notification event mechanism for the dial frame.
       */
      @Test
      public void testFrameListener() {
          DialPlot p = new DialPlot();
          ArcDialFrame f1 = new ArcDialFrame();
          p.setDialFrame(f1);
          p.addChangeListener(this);
          this.lastEvent = null;
          f1.setBackgroundPaint(Color.gray);
          assertNotNull(this.lastEvent);
  
          ArcDialFrame f2 = new ArcDialFrame();
          p.setDialFrame(f2);
          this.lastEvent = null;
          f1.setBackgroundPaint(Color.BLUE);
          assertNull(this.lastEvent);
          f2.setBackgroundPaint(Color.green);
          assertNotNull(this.lastEvent);
      }
  
      /**
       * Check the notification event mechanism for the dial scales.
       */
      @Test
      public void testScaleListener() {
          DialPlot p = new DialPlot();
          StandardDialScale s1 = new StandardDialScale();
          p.addScale(0, s1);
          p.addChangeListener(this);
          this.lastEvent = null;
          s1.setStartAngle(22.0);
          assertNotNull(this.lastEvent);
  
          StandardDialScale s2 = new StandardDialScale();
          p.addScale(0, s2);
          this.lastEvent = null;
          s1.setStartAngle(33.0);
          assertNull(this.lastEvent);
          s2.setStartAngle(33.0);
          assertNotNull(this.lastEvent);
      }
  
      /**
       * Check the notification event mechanism for a layer.
       */
      @Test
      public void testLayerListener() {
          DialPlot p = new DialPlot();
          DialBackground b1 = new DialBackground(Color.RED);
          p.addLayer(b1);
          p.addChangeListener(this);
          this.lastEvent = null;
          b1.setPaint(Color.BLUE);
          assertNotNull(this.lastEvent);
  
          DialBackground b2 = new DialBackground(Color.green);
          p.addLayer(b2);
          this.lastEvent = null;
          b1.setPaint(Color.RED);
          assertNotNull(this.lastEvent);
          b2.setPaint(Color.green);
          assertNotNull(this.lastEvent);
  
          p.removeLayer(b2);
          this.lastEvent = null;
          b2.setPaint(Color.RED);
          assertNull(this.lastEvent);
      }
  
  }
  